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Prompt gamma-ray analysis (PGA) of meteorite samples, with emphasis on the determination of Si

  • Environmental Assay: Activation Analysis
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Abstract

Neutron-induced prompt gamma-ray analysis (PGA) was applied to seven meteorite samples (Allende, Zagami, Acfer 209, ALH77005, ALH84001, EET79001 and Neagari). Samples were irradiated in both the thermal neutron and the cold neutron guided beams of JRR-3M at JAERI. Multiple samples of an Allende standard powder were analyzed for Si using two different methods: (1) the comparison method, using a Si standard, and (2) the mono-standard method, using Fe as an internal reference element. The Si concentrations determined by these two methods are in good agreement with literature values. The analytical sensitivity for Si using the cold neutron guided beam is∼14.3× higher than that for the thermal neutron guided beam. Other elements determined (B, Ca, Ti and S) also showed higher sensitivities using the cold neutron beam. The other meteorites studied showed some anomalous B and S values likely due to the effects of terrestrial weathering/contamination.

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Authors and Affiliations

  1. Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, 192-0397, Hachioji, Tokyo, Japan

    Sk. A. Latif, Y. Oura, M. Ebihara, G. W. Kallemeyn & H. Nakahara

  2. Department of Chemistry and Fuel Research, Japan Atomic Energy Research Institute, 319-1195, Tokai-mura, Ibaraki, Japan

    C. Yonezawa & T. Matsue

  3. Research Center for Nuclear Science and Technology, The University of Tokyo, 319-1195, Tokai-mura, Ibaraki, Japan

    H. Sawahata

Authors
  1. Sk. A. Latif
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  2. Y. Oura
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  3. M. Ebihara
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  4. G. W. Kallemeyn
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  5. H. Nakahara
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  6. C. Yonezawa
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  7. T. Matsue
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  8. H. Sawahata
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Latif, S.A., Oura, Y., Ebihara, M. et al. Prompt gamma-ray analysis (PGA) of meteorite samples, with emphasis on the determination of Si. J Radioanal Nucl Chem 239, 577–580 (1999). https://doi.org/10.1007/BF02349072

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  • DOI: https://doi.org/10.1007/BF02349072

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